I fell behind in my postings with the busy holidays and a little travel back home. WordPress ate my first attempt at this a week or two ago. This is the grammar for describing something that someone made you do.

子供の頃に　母に　ぼくは　ありがとうの手紙を　かかされた。
Kodomo no koro ni haha ni bokuha arigatou no tegami wo kakasareta.
When I was a kid, my mom made me write thank-you letters.

ビール先生に　１０マィルを　走らされた。
Biiru Sensei ni 10 mairu wo hashirasareta.
Bill Sensei made me run ten milse.

The structure:
に indicates the person making the other person do the action.
は indicates who was or is being made to do the action
を marks any objects involved (thank-you letters)

う – verbs are conjegated as follows:
書く　－　書かされる
走る　－　走られる
買う　－　買わされる

る – verbs: drop る add させられる
食べる　－　食べさせられる

irregular vers:
する　－　させられる
来る　－　こさせられる